JPS59140274A - 鉛芯 - Google Patents

鉛芯

Info

Publication number
JPS59140274A
JPS59140274A JP907483A JP907483A JPS59140274A JP S59140274 A JPS59140274 A JP S59140274A JP 907483 A JP907483 A JP 907483A JP 907483 A JP907483 A JP 907483A JP S59140274 A JPS59140274 A JP S59140274A
Authority
JP
Japan
Prior art keywords
wax
lead
core
boron nitride
film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP907483A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0360352B2 (cs
Inventor
Itsuo Arisawa
有沢　逸男
Joji Kojima
小嶋　丈治
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pilot Precision KK
Original Assignee
Pilot Precision KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pilot Precision KK filed Critical Pilot Precision KK
Priority to JP907483A priority Critical patent/JPS59140274A/ja
Publication of JPS59140274A publication Critical patent/JPS59140274A/ja
Publication of JPH0360352B2 publication Critical patent/JPH0360352B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Inks, Pencil-Leads, Or Crayons (AREA)
JP907483A 1983-01-21 1983-01-21 鉛芯 Granted JPS59140274A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP907483A JPS59140274A (ja) 1983-01-21 1983-01-21 鉛芯

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP907483A JPS59140274A (ja) 1983-01-21 1983-01-21 鉛芯

Publications (2)

Publication Number Publication Date
JPS59140274A true JPS59140274A (ja) 1984-08-11
JPH0360352B2 JPH0360352B2 (cs) 1991-09-13

Family

ID=11710455

Family Applications (1)

Application Number Title Priority Date Filing Date
JP907483A Granted JPS59140274A (ja) 1983-01-21 1983-01-21 鉛芯

Country Status (1)

Country Link
JP (1) JPS59140274A (cs)

Also Published As

Publication number Publication date
JPH0360352B2 (cs) 1991-09-13

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